Fix and add things

* Fix user ID reservation in registration
* Fix some database things
* Add commands
* Add basic contact syncing and portal creation
* Add better error logging

config/registration.go

@@ -55,7 +55,7 @@ func (config *Config) copyToRegistration(registration *appservice.Registration)
 	registration.SenderLocalpart = config.AppService.Bot.Username
 
 	userIDRegex, err := regexp.Compile(fmt.Sprintf("^@%s:%s$",
-		config.Bridge.FormatUsername("[0-9]+", "[0-9]+"),
+		config.Bridge.FormatUsername(".+", "[0-9]+"),
 		config.Homeserver.Domain))
 	if err != nil {
 		return err